Damian Carrington, The GuardianSpecies across land, rivers and seas decimated as humans kill for food in unsustainable numbers and destroy habitats.The number of wild animals on Earth has halved in the past 40 years, according to a new analysis. Creatures across land, rivers and the seas are being decimated as humans kill them for food in unsustainable numbers, while polluting or destroying their habitats, the research by scientists at WWF and the Zoological Society of London found.“ [...]